/*

 * Copyright (C) 2020-2024 Huawei Technologies Co., Ltd. All rights reserved.

 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.huaweicloud.nacos.discovery.check;

import org.springframework.boot.actuate.health.Health;
import org.springframework.boot.actuate.health.HealthIndicator;

import com.google.common.eventbus.Subscribe;
import com.huaweicloud.common.event.EventManager;
import com.huaweicloud.nacos.discovery.registry.NacosServiceRegistrationEvent;

public class NacosRegistryHealthIndicator implements HealthIndicator {
  private boolean isSuccess = false;

  private static final String REGISTRATION_NOT_READY = "nacos registration not ready";

  public NacosRegistryHealthIndicator() {
    EventManager.register(this);
  }

  @Override
  public Health health() {
    if (isSuccess) {
      return Health.up().build();
    }
    return Health.down().withDetail("Error Message", REGISTRATION_NOT_READY).build();
  }

  @Subscribe
  public void registryListener(NacosServiceRegistrationEvent event) {
    this.isSuccess = event.isSuccess();
  }
}